1·Background - Fetal atrioventricular (AV) block is an uncommon lesion with significant mortality.
背景-胎儿房室传导阻滞罕见，但具有极高的病死率。
2·Echocardiography in all patients showed tricuspid area without movement of the leaflets, no CDFI signal over the right atrioventricular junction.
所有病人二维超声心动图显示三尖瓣区无瓣叶活动，CDFI显示右房室连接处无血流信号。
3·Why is atrioventricular canal a concern?
为什么房室通道受到关注？
4·ObjectiveApplying echocardiography to assess the effects of atrioventricular synchrony and ventricular activation sequence on left ventricular systolic function.
目的探讨超声心动图法在房室同步和心室同步对左心室收缩功能影响中的应用。
5·Objective: to study the minimal effective doses of intravenous ATP and adenosine required to induce dual atrioventricular nodal pathways (DAVNP) during sinus rhythm.
目的：研究窦性心律时静脉注射三磷酸腺苷(atp)或腺苷诱发房室结双径路现象的最小有效剂量。